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MAX203EEWP Transceiver question

Category: Hardware
Product Number: MAX203EEWP

I am trying to connect one of the receiver ports of MAX203EEWP (pin 19) through a 2.2k resistor to V- (pin 10 and 17). I want this level to be below -3V to be recognized as a MARK level by the RS232 transceiver and invert it to logic 0 in the CMOS side (pin 20). What I see happening is that the pin 20 goes low for 10-40us and then gets pulled up to 5V. I was thinking keeping the pin 19 below the -3V will keep it at MARK level forever until I remove the resistor in circuit. 

Any reason the receiver side is getting pulled up after a short duration and not staying low forever?

Grammar correction
[edited by: EE3 at 11:59 AM (GMT -4) on 24 Mar 2023]